Tire-upsetting machine.



No. 67|,7|e. npBATEs.

TIRE UPSETTING MACHINE.

[Appximion med Feb. 16. woo.; (lo Model.)

Patented Apr.

2105er? as UNITED STATES iPATENT OFFICE.

ROBERT BATES, OF GRAND RAPIDS, WISCONSIN.

TIRE-UPSETTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 671,716, dated April 9,1901.

Application iiled February 16, 1900. Serial Noi 5,482. (No model.)

To ctZ' whom t may concern,.-

Be it known that l, ROBERT BATES, a citizen of the United States,residing at Grand Rapids, in the county of Wood and State of Wisconsin,have invented a new and useful Metal-Upsetting Machine, of which `thefol` lowing is a specification. l

My invention relates to a metal-upsetting mechanism which may beembodied as a separate machine or as a part of a combination met-al andwood working machine, the latter forming the subject-matter of aseparate application filed by me of even date herewith,.

Serial No. 5,4584.

One object of this invention is to provide a simple mechanism operableby a limited movement of the lever or levers to secure a powerfulupsetting action on a heated metallic bar or rod, such as may beemployed in a` tion, said restraining means being controllable by thework-gripping means, so as to be automatically thrown into and out ofoperative relation with the work on the operation of the gripping means.

Further objects and advantages of this invention will appear in thecourse of the subjoined description, and the novelty in the combinationsof mechanisms and in the construction and arrangement of parts will befully deiined in the claims.

In the drawings, Figure 1 is a perspective view of a metal-upsettingmechanism construct-ed in accordance with this invention and showing thegripping devices in their open positions for the reception of the work.Fig. 2 is a plan view of the mechanism shown by Fig. 1. Fig. 3 is alongitudinal sectional elevation with the grippers in their closedpositions, the plane of the section being indicated bythe dotted line 33 on Fig. 2. Fig. 4 is a detail view of one slidable element of theupsetting mechanism and the gripper, which is adjustable therewith.

The same numerals of reference are used to indicate like andcorresponding parts in each ofthe several figures of the drawings.

The frame 10 for supporting the operating parts of the upsettingmechanism may correspond to the bed of the combination wood andmetalworking machine hereinbefore referred to as forming thesubject-matter of another application; but if the upsetting mechanism ismade separately from the combination-machine the frame 10 may be of anysuitable character or construction. The frame is provided with an offsetflange, and a work-bed 12 rests on or is made integral with a rest 13.This work-bed is preferably curved somewhat in the direction of itslength, and on the upper surface thereof, near one end, is a fixed jaw111. The other end of the bed is reduced in thickness, so as to form aguide extension 15, on which is slidably fitted a movable Vvmember 16 ofthe upsetting mechanism, said movable member being flanged at 16 andtted slidably in a guide-boxing 17, which is preferably attached to theguide extension 15 of the bed, soA that the boxing will occupy a flushrelation to the uppersurface of the bed. The slidable member 16 istapered from the shouldered portion of the bed, so as to present aninclined surface to the action of one of the grippers, and on the Lipperinclined surface of this slidable member is a fixed jaw 18, which issimilar to the jaw 1-/1 on the work-bed. The slidable member 16, whichpractically constitutes a part of the Work-bed, is provided at its inneredge Awith an upstanding post 19, which is arranged to one side of thejaw 18, and this post supports a trunnion 20, which overhangs the bedmember 16. On this trunnion is loosely mounted a gripper 21, which isadapted to turn freely ou a horizontal axis, so as to swing toward orfrom the bed member 16, and in one end of this gripper is a jaw 22,which when the .gripper is swungin a downward direction is brought intoopposing relation to the jaw 18 on said bed member 16. Another gripper24 is mounted over the member 12 of the work-bed, and this gri pper isloosely supported on a horizontal trunnion 25, which is fast with a partof the frame 10, so that the IOO gripper 24 is likewise'free to turn ona horizentral-axis. In the free end of this gripper is a jaw 26, whichis brought into opposing relation to the jaw 14 on the bed lnexnber l2`by a downward movement of the gripper 24.

The gripper 21 is provided with an arm 23, extending in an oppositedirection from the jaw 22, and the other gripper 24 is likewise providedwith an upstanding shank 27. These two grippers are operativelyconnected to a single operating or lever head 28, which when moved ineither direction serves to simultaneously actuate the two grippers. Thislever-head is provided at its opposite ends with the slot-s 29 30, andat an intermediate point of its length said head is provided with asocket 31,- adapted to receive one end of an operating lever or handle32, by which the head may be conveniently manipulated. The gripper 24 isconnected with the lever-head through the medium of a link 33, one endof which kis pivoted by a bolt- 34 to the shank 27 ot' said gripper,while the other end of the link is pivoted within the slotted end 29 ofthe lever-head, as at 35. The other gripper 21 has its shank or arm 23fitted in the slot- 3() of the lever-head, so as to be connecteddirectly by a pivot-bolt 36 thereto, whereby a movement of the lever 32and the head 28 in one direction serves to simultaneously move, the twogrippers on their horizontal axes andl in opposite directions. It isthus apparenti that a single movement of the lever serves tov throw thetwo levers into positions for thev jaws thereof to coact with the jawson the members 12 16 ot' the work-bed for the pur-` pose of clamping thework at two points; but a movement of the lever in the reverse directionmoves both the grippers simultaneously and withdraws the jaws of saidgrippers away from the work, thereby releasing the latter vandpermitting the same to be easily removed from the upsetting mechanism.

In connection with the gripper mechanism I employ a work-restrainingdevice, which is situated betweenv the grippers and the two sets of jawson said grippers and the members of the extensible Work-bed, saidworkrestraining device being disposed in operative relation to the pathof the work for engagement with the'latt-er in a manner to preventbuckling or bending of the work during the upsetting operation. Thisrestrainer is in the form of a jaw 38, which is operated by a lever 39,the latter being fulcrumed by `loosely mounting the same on a short studor trunnion 40, which is fast with the machine-A frame. This lever isprovided with a depending short arm 41, pivotally connected at 42 tosuitable opstanding lugs on the restrainer-jaw, and the llong arm 43 ofthe lever is pivoted at its upper extremity to one end otl a short link45, the latter being extended to and fitted on the bolt 34, whichpivotally connects the link 33 to the gripper 24. By means of this link45 and the lever 39 the restrainer-jaw is controlled by the grippermechanism, and these parts are arranged to throw the restrainer-jaw 38into operative relation to the Work simultaneously with the grippers 2124; but a reverse movement of the grippers withdraws the jaw 38 from themechanism, so that either of the levers may be employed for, theoperation ot moving one member of the extensible bed relatively to theother member thereof. l'employ two lever-heads 46 47, each of which isfulcrumed at 48 on a part of the frame 10. The head 46 is provided witha socket for the reception of a lever 49, while the other head 47'issimilarly provided with a socket for the level'- arm 50. The lever-head46 has an eccentric connection at 51 with the member 16 of theextensible work-bed; but the lever-head 4'7 is provided with aneccentric stud 52, which is connected by a link 53 with the post 19 ofthe slidable bed member 16, as by the piv- 'is possessed of specialutility for the reason that the grippers are connected by toggle membersand serve tooperate-the work-restraining device, which is also of toggleformation in view of the fact that the restrainer-jaw'38 is pivoted uponthe arm 41 of the lever 39, the pivotal connection between the jaw 38and the lever 39 constituting a work-restraining toggle. Thegreatefliciency of this arrangement will appear in view of themanipulation of the parts during the upsetting of the tire.

, In operation the lever 32 is moved in an upward direction for thepurpose of withdrawing the grippers and the restrainer-jaw from themembers of the extensible work-bed, and with the parts in the positionshown byFig. 1 a metallic bar or rod of any characterand which has beenpreviously heated to the required temperature may be placed on themembers 12 16 of the work-bed, so as to engage with the jaws 14 18,respectively. The lever 32 is now depressed to simultaneously move thegrippers 21 24 and the jaw 38. This operationmoves the jaws 22 26 of thegrippers into operative relation to the jaws 14 18 on the members of thebed, whereby the work is firmly gripped at two points by the sets ofjaws. At the same time the jaw 38 is actuated to engage with the work ata point between the gripping by the two sets of jaws, said jaw 38presenting an elongated surface to the work. Either of the levers 49 or50 may nowbe operated, and in case the lever 49 is actuated the bedmember 16, its post 19, and the gripper 21 are moved toward the bedmember 12 and the gripper IOO IIO

24, so as to upset the metal, the bed member 16 being limited toslidable movement by the guide-boxing. When the lever is operated, thelink 53 transmits the motion to the slidable bed member 16, so as tomove the latter and the gripper thereon toward the other gripper, thusupsetting the metal. In the upsetting operation the gri ppers remain inengagement with the work, so as not to be aiected by the operation ofthe parts to upset the lever, and the jaw 38 prevents the metal frombending in an upward direction by reason of the fact that the swingingof the lever 39 has alined the point of contact of the jaw 38, the pivotof said jaw, and the axis of 'the lever39, while the bed restrains themetal from bending in a downward direction. After the metal shall havebeen upset the lever 32 is operated to withdraw the grippers and therestrainer-jaw, and the work may then be removed, it being apparent thatthe release of the restrainer-jaw 38 is effected through the lateralmovement of the knuckle of the toggle of which said jaw forms onemember.

My improved mechanism may be employed for upsetting any kind of metal;but,as herein shown and described, this mechanism is especially adaptedto the work of shrinking metallic tires for vehicles.

Changes within the scope of the appended claims may be made in the formand proportion of some of the parts while their essential features areretained and the spirit of the invention is embodied. Hence I do notdesire to be limited to the precise form of all the parts as shown,reserving the right to vary therefrom.

Having thus described the invention, what I claim is- 1. In atire-upsetting device, the combina- 4o tion with a frame and fixed bedmember, of a movable bed member, grippers carried by the iXed andmovable bed members, means for operating the movable bed member, and atoggle-operated work-restraining jaw inter- 45 mediate of the grippers.

2. In attire-upsetting device, the combination with a frame and fixedbed member, of a movable bed member, interdependent grippers carried bythe fixed and movable bed 5o members, and a toggle -operated workrestraining jaw intermediate of thegrippers, said jaw being operativelyconnected with the grippers for actuation therewith.

3. In a tire-upsetting device, the combination with aframe and fixed bedmember, of a movable bed member, interdependent grippers carried by thexed and movable bed members, a toggle-operated work-restraining jawintermediate of the grippers, and tableo operating devices at theopposite ends of the frame, both of said devices being operativelyconnected to the movable bed member.

In testimony that I claim the foregoing as my own I have hereto aliiXedmy signature in the presence of two witnesses.

ROBERT BATES.

Witnesses:

D. B. PHILLEo, F. J. WOOD.

